Bobbin-driving device for spindles.



D. LEMOINE @I G. P. FOURNIER. BoBBIN DRIVING DEVICE FOR SPINDIES.

APPLICATION FILED JUNE l5. 1918.

Patented Feb.

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DVIDLEMOINE ND GEOEGE P. FOURNEEB, 0F WHITINSVILLE, iMASSACHUSETTS.l

BQBBN-DRIVING DEVICE FOR SPINDLES.

Specication of Let-ters Patent- Ptented Feb., l, llgli,

.application led June 15, 1913. Serial No. 240,230.

To all 'whom' z't may concern.'

Be it. known that we, DAVID LEMOINE and GEORGE P. FOURNIER, citizens of the United States, both residing at Whitinsville, in the county of Worcester and State of Massachusetts have invented a new and useful BO-sbin-briving Device for spindles, of which the following is a specification.

This invention relates to a device for centerin and driving a -bobbin on a rotatable spine such as is used in spinning or twisting operations.

A rigid bobbin seat has been found -impractical owing to unavoidalble variations in the diameter of the holes in the bobbins, due to defects in manufacture or changes in condition ywhile in use. Diderent forms oi adjustable 'bobbin engaging and -driving devices have 'been heretofore used, presenting certain elements of utility, Abut so far as we are advised no one of these devices has given entire satisfaction, particularly in the matter of accumulating lint and waste.

1t is the general object of our invention to improve this type of spindle driving device, providing a driving device by which any bobbin within the range of adjustment of the device will be Irboth accurately centered and positively rotated.

With this eneral object in view we provide a plura ity of bobbin engaging arms separately mounted on the upper end oi the spindle whirl, and important features of our invention relate to the form and con @ther important features relate to the manner of supporting the arms upon the whirl; to the means for forcing the arms yieldinglyoutward to engage the bobbin; and to the means for limiting both nutward and upward movement of said arms relative to the spindle blade.

@ther features of our invention relate to arrangements and combinations of parts hereinafter described and more particularly pointed out in the appended claims.

preferred form or" our invention is shown in the drawings, in which- Figure 'l is a sectional elevation of a spindle embodying our improvements;

Fig. 2 is a similar view but showing the parts in driving engagement with a bobbin;

Fig. 3 is a transverse sectional view taken along the line 3 3 in Fig. l., and

Fig. 4 is a perspective view of one of the driving arms.

We have shown a spindle blade l0 and whirl 11 essentially of the usual form. A plurality. of 'bobbin engaging arms 12 are supported upon the upper end of the whirl 11. Each arm l2 is. provided at its lower end with an outwardl andvv downwardly extending flange 13 adiipted to be seated in an annular recess 14 formed end of the whirl 1l. The recess 14: is pref' era-bly substantially semi-circular in cross section and closely corresponds to the section of the dange 13.

A. ortion l5 of each arm 12 projects slight y upward from the upper side of the flange 13 and engages the under eide of a flanged cap 16 having a driving t upon the outside of the whirl 11. The inner edge of the cap 16 vengages the outer face of each arm l2 when the arm is in the position shown in Fig. 1, and thus limits outward movement thereof.

A coil spring 17 is seated in a. circular groove 18 in the upper face of the Whirl 11, said spring engaging the arms 12 as shown in Fig. l, and yieldingly moving them to outer or inoperative position. The arms 12 may be provided with short depending projections 19 adapted to center the spring and to hold the arms and spring in operative relation. Upward pressure of the spring adjacent the projections 19 will rock each arm about its bearing in the recess 11i and will swing the upper end of the arm outwardly until the arm engage the cap 16. Driving pins 2O separate the arms 12 and constitute means for positively rotating the arms with the whirl..

When a bobbin is placed on the spindle the arms move inward, as shown in Fig. 2, slightly compressing the spring 17.' The tension of the spring 1? is then suii'icient to in the upper l positively drive the bobbin with the spindle.

The provision of the opposed engaging portions 13 and 15 permits each arm to move freely about its bearing Yin the recess 14E, while at the same time preventing movement of the arm longitudinally of the spindle.

in their inward and outward movements, the arms 12 swing about their bearings in the recess 14 and are thus continuously and accurately centered in every position. @t will also be noted that the arms 12, the cap' 16, and the sp1-inv' 17 are all supported entirely free of the tblade 10. The blade may therefore be removed from the whirl 11 without aecting the spindle driving da vice9 and moreover any slight bend in the blade between the whirl and the tip will not cause the bobbin to run od center. As spindle blades are commonly straightened so that the tip and the whirl will run true regardless of any slight bend between these two points, this support or the lower end of the bobbin independently oir' the blade is of considerable importance.

lt will also be seen that the arms 12 are entirely :free and unobstructed above the cap 16, thus permitting cutting and removal of any waste or lint found on the spindle. At

the same time the spring 17 is fully protected .from injury or displacement.

Havmg thus described our invention, 1t

-will be evident that changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope thereof as set forth in the claims, and we do not wish to be otherwise limited to the details herein disclosed, but what we claimis- 1. A spindle having, in combination, a blade, a whirl with an annular recess and a concentric groove in its upper end, a plurality of arms surrounding said blade and each seated at its lower end in said recess, means to prevent di placement of said arms, and a sprlng seated in said groove and yieldingly engaging said arms to move them away from said blade.

2. A spindle having, in combination, a blade, a whirl having an annular groove of Asubstantially semi-circular cross section ineens@ formed in its upper end, a plurality of bobbin-engaging arms each having an outwardly and downwardly projecting flange rounded at its lower end to fit said annular groove, a cap fitting said whirl and limiting outward movement of said arms, and means to move said arms yieldingly outwardly.

3. A' spindle having, in combination, a blade, a whirl mounted thereon and having an annular groove formed in its upper end, a plurality of bobbing engaging arms each having an outwardly and downwardly projecting flange Shaped at its lower end to fit said vannular groove, a cap fitting Said whirl and limiting upward and outward movement of said arms, and means inclosed between said cap and whirl eiective to move said arms yieldingly outwardly.

t. A spindle having, in combination, a blade, a whirl mounted thereon, a plurality of upwardly extending arms havin their lower ends seated on the upper sur, ace of said whirl, a cap iitting said whirl and limiting outward and upward movement of said arms, and a spring seated on said whirl below said arms and cap and engaging said arms to force said arms yieldingly away from said blade and against said cap, said arms, cap, and spring being supported by said whirl independently of said blade.`

ln testimony whereof we have hereunto affixed our signatures.

DAVlD LEMOLWNE. GEURGE l?. FOURNEER. 

